India's One97 Communications has a wide range of ambitions in the rapidly developing country. We examined its strategy to dominate digital money and the broader financial services space, as well as the many competitors that are also vying for a share of the pie.

Challenger banks. What are they? Who's who? And why have these startups raised hundreds of millions in venture capital to take on bank incumbents? We break down how these startups are reaching, converting, and engaging millions of customers.

The largest US banks have acquired only 18 fintech startups since 2013, but activity in the last 5 months has started picking up. In total, 2017 saw more acquisitions by top US banks than any other year.

Blockchain is transforming everything from payments transactions to how money is raised in the private market. As it picks up momentum, will the traditional banking industry embrace this new technology or be replaced by it?